SDR ABXA050204

Service difficulty report · Downlock Switch · Doug DC931

Difficulty date: August 24, 2005
Submitted: August 26, 2005
Operation: Air carrier
Aircraft: N907AX
Make and model: Doug DC931
Aircraft serial: 47203
Aircraft time: 56,252 hours, 58,260 cycles
System (JASC): 3260 · Landing Gear Position and Warning
Part: Downlock Switch
Part number: 7000010101ABX
Part serial: 12042
Condition: Defective
Location: Lt Mlg
Stage of operation: CL
How discovered: O
Nature of condition: J
Precautionary procedure: A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

LEFT MAIN GEAR UNSAFE LIGHT STAYED ON AFTER GEAR RETRACTION, RECYCLED GEAR AND GEAR UNSAFE LIGHT WENT OUT. FOUND NR 5 PIN ON DOWNLOCK SWITCH DIRTY, CLEANED RECEPTACLE AND PIN. CHECKED DOWNLOCK SWITCH, FOUND INTERMITTENT. OPS CHECKED AND VERIFIED PROBLEM. REMOVED AND REPLACED DOWNLOCK SWITCH IAW DC-9 MM 32-60-01-2-0101. OPS CHECKED GOOD.

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